gcc: cleanup lib installation

src/gcc.mk

@@ -53,11 +53,13 @@ endef
 
 define $(PKG)_POST_BUILD
     # TODO: find a way to configure the installation of these correctly
-    rm -f $(addprefix $(PREFIX)/$(TARGET)/bin/, c++ g++ gcc gfortran)
-    -mv '$(PREFIX)/lib/gcc/$(TARGET)/lib/'* '$(PREFIX)/lib/gcc/$(TARGET)/$($(PKG)_VERSION)/'
-    -mv '$(PREFIX)/lib/gcc/$(TARGET)/'*.dll '$(PREFIX)/lib/gcc/$(TARGET)/$($(PKG)_VERSION)/'
-    -cp '$(PREFIX)/lib/gcc/$(TARGET)/$($(PKG)_VERSION)/'*.dll '$(PREFIX)/$(TARGET)/bin/'
-    -cp '$(PREFIX)/lib/gcc/$(TARGET)/$($(PKG)_VERSION)/'*.dll.a '$(PREFIX)/$(TARGET)/lib/'
+    # ignore rm failure as parallel build may have cleaned up, but
+    # don't wildcard all libs so future additions will be detected
+    $(and $(BUILD_SHARED),
+    mv  -v '$(PREFIX)/lib/gcc/$(TARGET)/$($(PKG)_VERSION)/'*.dll '$(PREFIX)/$(TARGET)/bin/gcc-$($(PKG)_VERSION)/'
+    -rm -v '$(PREFIX)/lib/gcc/$(TARGET)/'libgcc_s*.dll
+    -rm -v '$(PREFIX)/lib/gcc/$(TARGET)/lib/'libgcc_s*.a
+    -rmdir '$(PREFIX)/lib/gcc/$(TARGET)/lib/')
 endef
 
 define $(PKG)_BUILD_mingw-w64
@@ -97,6 +99,14 @@ define $(PKG)_BUILD_mingw-w64
     $(MAKE) -C '$(1).build' -j '$(JOBS)'
     $(MAKE) -C '$(1).build' -j 1 install
 
+    # shared libgcc isn't installed to version-specific locations
+    # so install correctly to avoid clobbering with multiple versions
+    $(and $(BUILD_SHARED),
+    $(MAKE) -C '$(1).build/$(TARGET)/libgcc' -j 1 \
+        toolexecdir='$(PREFIX)/$(TARGET)/bin/gcc-$($(PKG)_VERSION)' \
+        SHLIB_SLIBDIR_QUAL= \
+        install-shared)
+
     $($(PKG)_POST_BUILD)
 endef